An alien eve for someone
It’s Christmas time, a period full of traditions and symbols, such as the Ilex aquifolium, known as English holly or Christmas holly. Its glossy green prickly leaves and bright red berries decorate wreaths, garlands and cards where Christmas is celebrated. It is a subject of music and folklore, especially in the British tradition.
This species is native to Europe, so why are we talking about it?
Because Ilex aquifolium is an invasive species on the West Coast of Canada and the United States and in Hawaii, this is one of the cases in which one European native species becomes invasive in another continent.
Some of the qualities that make holly such a desirable landscaping plant also make it a ruthless invader: in fact it can live for a century, withstand considerable damage and thrive in the shade. It also reproduces prolifically; many parts of one tree can make new hollies, and this makes it a threat to American ecosystems.
In the Pacific Northwest scientists and conservationist are fighting the English holly to save the biodiversity of the forests. In the article we read: “We were looking for English holly, a cherished Christmas symbol that is threatening biodiversity in the Pacific Northwest. We were there to poison it.”
This case underlines the importance of a conscious use of ornamental exotic plants, of which we should avoid moving living or dead parts, to prevent risks and damages to biodiversity, as highlighted by the project “Don’t move firewood” reminding: “Don’t move firewood long distances — it can potentially transport invasive species. The forests, and your great-great-grandkids, will thank you.”
We can follow season’s traditions while respecting biodiversity, also being careful when buying gifts online, such as seeds, fruits and plants, since they could carry alien guests with them.
The EASIN team wishes everyone Joyful Festivities and Happy New Year!